ProcessingによるGenerative art作品#8

これこれこういうの！
でももっと滑らかさと気持ち良さをプラスしたところ。

今読んでいるNature of codeのパーティクルシステムの章が楽しみです。

Code

Mover[] m = new Mover[500];

Attractor a;

void setup() {
  size(960, 540);
  //pixelDensity(2);
  smooth();
  colorMode(HSB, 360, 100, 100, 100);
  blendMode(ADD);
  background(0);
  
  for (int i = 0; i < m.length; i++) {
    m[i] = new Mover(1, map(i, 0, m.length, 0, width), random(-10));
  }
  
}

void draw() {
  a = new Attractor();
  
  if (mousePressed) {
    background(0);
  }
  
  for (int i = 0; i < m.length; i++) {
    PVector force = a.attract(m[i]);
    m[i].applyForce(force);
    m[i].display();
    m[i].update();
  }
}

void keyPressed() {
  if (key == ' ') {
    saveFrame("####.png");
  }
}

//----------------------------------------------------

class Attractor {
  float mass;
  float G;
  PVector location;

  Attractor() {
    location = new PVector(mouseX, mouseY);
    mass = 20;
    G = 1;
  }

  PVector attract(Mover m) {
    
    PVector force = PVector.sub(location, m.location);
    float d = force.mag();
    d = constrain(d, 20.0, 30.0);
    force.normalize();
    float strength = (G * mass * m.mass) / (d * d * 2);
    force.mult(strength);
    return force;
  }
  void display() {
    strokeWeight(4);
    stroke(0);
    point(location.x, location.y);
  }
}
//--------------------------------------------------

class Mover {

  PVector location;
  PVector velocity;
  PVector acceleration;
  PVector wind;
  float mass;
  float colnoise;
  float lx, ly;

  Mover(float m, float x, float y) {
    mass = m;
    location = new PVector(x, y);
    velocity = new PVector(1, 0);
    acceleration = new PVector(0, 0);
    wind = new PVector(0.001, 0);
    lx = random(-100, 100);
    ly = random(-100, 100);
  }

  void applyForce(PVector force) {
    PVector f = PVector.div(force, mass);
    acceleration.add(f);
  }

  void update() {
    
    velocity.add(acceleration);
    location.add(velocity);
    acceleration.mult(0);

    colnoise += 0.007;
  }

  void display() {
    color col = color(map(noise(colnoise), 0, 1, 200, 360), 80, 80);
    stroke(col);
    strokeWeight(1);
    point(location.x, location.y);
  }
}

Happy coding!